WO2021031880A1

WO2021031880A1 - Electronic apparatus for wireless communication, method, and computer readable storage medium

Info

Publication number: WO2021031880A1
Application number: PCT/CN2020/107687
Authority: WO
Inventors: 刘敏; 孙晨
Original assignee: 索尼公司; 刘敏
Priority date: 2019-08-16
Filing date: 2020-08-07
Publication date: 2021-02-25
Also published as: EP4007412A1; KR20220048994A; CN112399576A; EP4007412A4; CN114223295A; US20220287011A1

Abstract

Provided are an electronic apparatus for wireless communication, a method, and a computer readable storage medium. The electronic apparatus comprises: a processing circuit configured to acquire downlink control information from a base station, and to determine, at least on the basis of a first specific field of the downlink control information, whether a feedback mechanism of a hybrid automatic repeat request process has been deactivated, wherein if it is determined that the feedback mechanism of the hybrid automatic repeat request process has been deactivated, a result of verification performed on a data packet is not fed back to the base station. (FIG. 1)

Description

Electronic device and method for wireless communication, and computer readable storage medium

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on August 16, 2019, the application number is 201910758553.6, and the invention title is "electronic equipment and methods for wireless communication, computer-readable storage media", all of which The content is incorporated in this application by reference.

Technical field

This application relates to the field of wireless communication technology, and specifically to hybrid automatic retransmission technology in a wireless communication system. More specifically, it relates to an electronic device and method for wireless communication and a computer-readable storage medium.

Background technique

The 3rd Generation Partnership Project (3GPP) has proposed that satellite communication is the best (or even the only) option for backhaul communication in scenarios such as aircraft communication, maritime ships and remote areas, and it is recommended to make full use of satellites. ability. In most cases, the satellite communication network called Non-Terrestrial Network (NTN) has been predicted to be an important part of the sixth-generation mobile communication system, which will form an integrated seamless network with future terrestrial networks . Therefore, satellite communications and network technologies have aroused a lot of interest in both academia and industry.

Hybrid Automatic Repeat Request (HARQ) technology is a technology that combines Forward Error Correction (FEC) and Automatic Repeat Request (ARQ). The receiving end uses cyclic redundancy check (CRC) to detect whether the received data packet is wrong. If there is no error, the receiving end will send a positive acknowledgement (ACK) to the sending end, and after receiving the ACK, the sending end will send the next data packet. If there is an error, the receiving end will save the data packet in the HARQ buffer and send a negative acknowledgement (NACK) to the sending end. After receiving the NACK, the sending end will resend the same data, and the receiving end The data stored in the HARQ buffer will be merged with the subsequently received data, and then the merged data will be CRC again. If it still fails, the process of "request for retransmission and then soft merge" will be repeated. HARQ uses the stop-and-wait process to send data, that is, after the sender sends a Transmission Block (TB), it will wait for the confirmation message, and then proceed to the next step after receiving the feedback. In addition, in order to improve system efficiency, the concept of HARQ process (HARQ process) is introduced, that is, when one HARQ process is waiting for confirmation information, the sender can use another HARQ process to continue sending data. Currently, 5G NR supports a maximum of 16 HARQ process.

For example, in NTN, due to the increase in the round-trip delay (RTD) between the base station and the terrestrial user, if HARQ continues to be used, the system efficiency will decrease. Therefore, the HARQ technology that works well in the terrestrial network is in the NTN Is no longer universally applicable.

Summary of the invention

A brief overview of the present invention is given below in order to provide a basic understanding of certain aspects of the present invention. It should be understood that this summary is not an exhaustive summary of the present invention. It is not intended to determine the key or important part of the present invention, nor is it intended to limit the scope of the present invention. Its purpose is merely to present some concepts in a simplified form as a prelude to the more detailed description that will be discussed later.

According to one aspect of the present application, there is provided an electronic device for wireless communication, including: a processing circuit configured to: obtain downlink control information from a base station; and determine a hybrid based on at least a first specific field of the downlink control information Whether the feedback mechanism of the automatic retransmission request process is closed, wherein, when it is determined that the feedback mechanism of the hybrid automatic retransmission request process is closed, the verification result for the data packet is not fed back to the base station.

According to another aspect of the present application, there is provided a method for wireless communication, including: acquiring downlink control information from a base station; and determining feedback of a hybrid automatic repeat request process based at least on a first specific field of the downlink control information Whether the mechanism is turned off, where it is determined that the feedback mechanism of the hybrid automatic repeat request process is turned off, the verification result for the data packet is not fed back to the base station.

According to one aspect of the present application, there is provided an electronic device for wireless communication, including: a processing circuit configured to generate downlink control information, the downlink control information including at least a first specific field for indicating whether to turn off hybrid automatic A feedback mechanism for the retransmission request process; and providing downlink control information to the user equipment, where the user equipment does not feed back the verification result for the data packet to the base station when the feedback mechanism of the hybrid automatic repeat request process is closed.

According to one aspect of the present application, there is provided a method for wireless communication, including: generating downlink control information, the downlink control information including at least a first specific field used to indicate whether to close a feedback mechanism for a hybrid automatic repeat request process; And providing the downlink control information to the user equipment, where the user equipment does not feed back the verification result of the data packet to the base station when the feedback mechanism of the hybrid automatic repeat request process is closed.

The electronic device and method according to the present application can realize the dynamic closing and opening of the feedback mechanism of the hybrid automatic retransmission request process, realize flexible control based on data packets, and improve system efficiency.

According to other aspects of the present invention, a computer program code and a computer program product for implementing the above method for wireless communication and a computer on which the computer program code for implementing the above method for wireless communication is recorded are also provided Readable storage medium.

These and other advantages of the present invention will be more apparent through the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

Description of the drawings

In order to further illustrate the above and other advantages and features of the present invention, the specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The drawings together with the following detailed description are included in this specification and form a part of this specification. Elements with the same function and structure are denoted by the same reference numerals. It should be understood that these drawings only describe typical examples of the present invention and should not be regarded as limiting the scope of the present invention. In the attached picture:

Fig. 1 shows a block diagram of functional modules of an electronic device for wireless communication according to an embodiment of the present application;

Figure 2 shows an example of the mapping relationship between PDSCH-to-HARQ_feedback timing indicator and the number of time slots;

Figure 3 shows another example of the mapping relationship between PDSCH-to-HARQ_feedback timing indicator and the number of time slots;

Figure 4 shows another example of the mapping relationship between PDSCH-to-HARQ_feedback timing indicator and the number of time slots;

Fig. 5 shows a block diagram of functional modules of an electronic device for wireless communication according to another embodiment of the present application;

Fig. 6 shows an example of the information flow between the base station and the user equipment;

FIG. 7 shows another example of the information flow between the base station and the user equipment;

Fig. 8 shows a flowchart of a method for wireless communication according to an embodiment of the present application;

Fig. 9 shows a flowchart of a method for wireless communication according to another embodiment of the present application;

10 is a block diagram showing a first example of a schematic configuration of an eNB or gNB to which the technology of the present disclosure can be applied;

11 is a block diagram showing a second example of a schematic configuration of an eNB or gNB to which the technology of the present disclosure can be applied;

FIG. 12 is a block diagram showing an example of a schematic configuration of a smart phone to which the technology of the present disclosure can be applied;

FIG. 13 is a block diagram showing an example of a schematic configuration of a car navigation device to which the technology of the present disclosure can be applied; and

14 is a block diagram of an exemplary structure of a general personal computer in which the method and/or apparatus and/or system according to the embodiments of the present invention can be implemented.

detailed description

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made during the development of any such actual implementation in order to achieve the developer’s specific goals, for example, compliance with system and business-related constraints, and these The restriction conditions may vary depending on the implementation. In addition, it should also be understood that although the development work may be very complicated and time-consuming, for those skilled in the art who benefit from the present disclosure, such development work is only a routine task.

Here, it should be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and/or processing steps closely related to the solution according to the present invention are shown in the drawings, and are omitted. Other details that are not relevant to the present invention are described.

As mentioned above, for example, in a scenario with a large RTD such as NTN, the existing HARQ feedback mechanism will cause the system efficiency to decrease. Therefore, this application intends to provide a solution for flexible control of the HARQ feedback mechanism, so as to improve system efficiency while ensuring system reliability. It should be understood that although NTN is used as an example of a scenario in the above, the application scenario of the technical solution of the present application is not limited to this, but can be appropriately applied to any occasion that requires a flexible HARQ feedback mechanism.

FIG. 1 shows a block diagram of functional modules of an electronic device 100 for wireless communication according to an embodiment of the present application. As shown in FIG. 1, the electronic device 100 includes: an acquiring unit 101 configured to acquire downlink control information from a base station (Downlink Control Information, DCI); and the determining unit 102 is configured to determine whether the feedback mechanism of the HARQ process (HARQ process) is turned off based on at least the first specific field of the DCI, wherein the feedback mechanism of the HARQ process is determined to be turned off In this case, the verification result for the data packet is not fed back to the base station.

Wherein, the acquiring unit 101 and the determining unit 102 may be implemented by one or more processing circuits, and the processing circuit may be implemented as a chip, for example. In addition, it should be understood that each functional unit in the apparatus shown in FIG. 1 is only a logical module divided according to the specific function implemented by it, and is not used to limit the specific implementation manner.

The electronic device 100 may, for example, be provided on the user equipment (UE) side or be communicably connected to the UE. Here, it should also be pointed out that the electronic device 100 may be implemented at the chip level, or may also be implemented at the device level. For example, the electronic device 100 may work as a user device itself, and may also include external devices such as a memory and a transceiver (not shown in the figure). The memory can be used to store programs and related data information that the user equipment needs to execute to implement various functions. The transceiver may include one or more communication interfaces to support communication with different devices (for example, base stations, other user equipment, etc.), and the implementation form of the transceiver is not specifically limited here. This also applies to the subsequent description of other configuration examples of the electronic device on the user equipment side.

In addition, it should be noted that the first, second, ... in this article are only for the purpose of distinguishing, and do not have any sequential meaning.

In this embodiment, the HARQ feedback mechanism is turned off/on based on DCI, which can achieve data packet level control. For example, the HARQ feedback mechanism can be dynamically turned on/off according to RTD size, data service requirements, specific communication procedures, etc., thereby improving flexibility And system efficiency.

In the case that the UE is configured with multiple HARQ processes, the above-mentioned HARQ feedback mechanism is turned off/on for one of the HARQ processes (for example, identified by the HARQ process sequence number), that is, the feedback mechanism of each HARQ process can be performed separately Dynamic on/off.

It should be noted that when the HARQ feedback mechanism is closed, in order to ensure system reliability, the possibility of using HARQ blind transmission is not ruled out. HARQ blind transmission means that within a certain period of time, the sender repeatedly sends the same data multiple times without waiting for feedback from the receiver. The receiving end soft-combines the data packets received multiple times during this period without checking and feeding back each data packet.

In addition, the embodiments of the present application do not limit the behavior of the user equipment itself. For example, when the feedback mechanism of the HARQ process is closed, the user equipment as the receiving end can clear the HARQ buffer corresponding to the HARQ process to reduce the storage pressure, and can also keep the The original data in the HARQ buffer of the HARQ process is combined with multiple transmitted data during retransmission to improve reliability. On the other hand, when the feedback mechanism of the HARQ process is turned off, the user equipment may perform verification on the data packet but does not feed back the verification result to the base station, or may not perform verification on the data packet, depending on the specific implementation form.

For example, the first specific field of the DCI is set to indicate whether the feedback mechanism of the HARQ process is turned off, and the first specific field is selected so that the HARQ blind transmission is still supported when the feedback mechanism of the HARQ process is turned off. For example, the determining unit 101 is configured to determine that the feedback mechanism of the HARQ process is turned off when it is determined that the first specific field has a specific value. The specific value may be any predetermined value, such as all 0s or all 1s.

Exemplarily, the determining unit 102 may parse the meaning of the first specific field based on radio resource control (Radio Resource Control, RRC) signaling to perform the determination. In other words, the base station informs the user equipment via RRC signaling to one or more of the following: whether to perform dynamic on/off of the feedback mechanism of the HARQ process; the specific field of the first specific field used to indicate that the feedback mechanism of the HARQ process is turned off What is the value.

Alternatively, the determining unit 102 may also parse the meaning of the first specific field based on the inherent configuration. For example, in the case that the feedback mechanism of the HARQ process is to be dynamically turned on/off, the value of the specific value of the first specific field used to determine that the feedback mechanism of the HARQ process is turned off is written into the user equipment at the factory.

As an example, the first specific field may be PDSCH-to-HARQ_feedback timing indicator. This field is an existing field in DCI. In 5G NR scheduling, the feedback time of ACK/NACK for each HARQ process is dynamically indicated by the PDSCH-to-HARQ_feedback timing indicator in the corresponding DCI. For example, the UE is continuously scheduled to receive two PDSCHs, and the HARQ feedback time for the first PDSCH (corresponding to HARQ process#1) is determined by the PDSCH-to-HARQ_feedback timing indicator in the DCI that schedules the first PDSCH. The HARQ feedback time of one PDSCH (corresponding to HARQ process#2) is determined by the PDSCH-to-HARQ_feedback timing indicator in the DCI that schedules the second PDSCH.

For example, for DCI format 1_0, the value of the PDSCH-to-HARQ_feedback timing indicator field is mapped to the list {1, 2, 3, 4, 5, 6, 7, 8}; for DCI format 1_1, PDSCH-to-HARQ_feedback timing indicator The value of the field is mapped to the value of a set of number of slots (k) provided by the high-level parameter dl-DataToUL-ACK, as shown in Figure 2, where dl-DataToUL-ACK is a list of timings for sending ACK/NACK.

For example, the user equipment receives the PDSCH in the nth time slot, and if the PDSCH-to-HARQ_feedback timing indicator is mapped to the value k, the user equipment feeds back the verification result corresponding to the PDSCH in the n+k time slot, such as ACK/ NACK.

In this example, if the value of the PDSCH-to-HARQ_feedback timing indicator is a specific value such as all 0s or all 1s (not limited to this), it no longer indicates the HARQ feedback time, but indicates that the feedback mechanism of the HARQ process is closed, and the user The device does not perform ACK/NACK feedback.

For example, the determining unit 102 may determine the meaning of the first specific field based on the parameter dl-DataToUL-ACK in the RRC signaling, where dl-DataToUL-ACK reserves a state to indicate when the first specific field takes a specific value When the HARQ process feedback mechanism is closed.

FIG. 3 shows an example of the mapping relationship between the first specific field and the number of time slots when the first specific field is the PDSCH-to-HARQ_feedback timing indicator. It can be seen that in this example, the specific value is all 0s. When the PDSCH-to-HARQ_feedback timing indicator is all 0s, it is mapped to the reserved state of dl-DataToUL-ACK, indicating that the feedback mechanism of the HARQ process is Closed; and when the value of PDSCH-to-HARQ_feedback timing indicator is not all 0, the number of time slots to be delayed is the number of different time slots corresponding to other states mapped to dl-DataToUL-ACK.

In addition, the reserved state of dl-DataToUL-ACK may also be used to indicate the reference value of the first specific field when the feedback mechanism of the HARQ process is turned on. The reference value is used to supplement the meaning of the first specific field when the feedback mechanism of the HARQ process is turned on.

When the first specific field is PDSCH-to-HARQ_feedback timing indicator, the reference value is the number of reference time slots. When calculating the time slots used for feedback, the reference value is added to the first specific field mapped to The number of time slots. Figure 4 shows another example of the mapping relationship between the PDSCH-to-HARQ_feedback timing indicator and the number of time slots. Among them, an example of a specific value is all 0s. When the PDSCH-to-HARQ_feedback timing indicator is all 0s, it is mapped to the reserved state of dl-DataToUL-ACK, indicating that the feedback mechanism of the HARQ process is closed, and at the same time, the reserved state The reference value of PDSCH-to-HARQ_feedback timing indicator is also indicated. When the value of the PDSCH-to-HARQ_feedback timing indicator is not all 0s, the number of time slots that are really delayed is the number of different time slots corresponding to other states mapped to dl-DataToUL-ACK plus the reference value.

The reference value may be calculated based on the minimum distance of the satellite beam to the ground, for example. Specifically, assuming that the minimum distance for the satellite beam to reach the ground is d, under the transparent architecture, d'=2*d is the shortest distance; under the regenerative architecture, d'=d), and the speed of light is c, subcarrier spacing (sub carrier spacing, SCS) of ^{15KHz * 2 k (k = 0,1,2,3,4} ), the reference value of the number of slots is obtained by the following formula:

In the example of Figure 4, the reference value is 16, assuming that the PDSCH-to-HARQ_feedback timing indicator is "001", and the number of timeslots k corresponding to the state "001" is 10, if the user equipment receives the PDSCH at timeslot n , The feedback ACK/NACK will be sent at time slot n+26 (ie, n+10+16).

In addition, the aforementioned reference value can also be used as the reference value of the PDSCH-to-HARQ_feedback timing indicator indicated in the DCI format 1_0. For example, the value of the PDSCH-to-HARQ_feedback timing indicator field is mapped to the list {1, 2, 3, 4, 5, 6, 7, 8}, if the user equipment receives the PDSCH at time slot n, it will send feedback ACK/NACK at time slot n+17 (ie, n+10+7).

The electronic device 100 of this embodiment can also realize the dynamic on/off of the feedback mechanism for the HARQ process of semi-persistent scheduling (SPS) data. For example, the first specific field may be included in the DCI used for semi-persistent scheduling (SPS) activation or release, so as to enable/disable the feedback mechanism of the HARQ process of the semi-persistent scheduling data. Specific examples will be given later with reference to FIG. 7.

In addition, when determining that the first specific field does not exist or is defaulted, the determining unit 102 may determine whether the feedback mechanism of the HARQ process is turned off based on the value of the reserved state of dl-DataToUL-ACK. For example, when the value of the reserved state is 0 or less than a specific value, the determining unit 102 determines that the feedback mechanism of the HARQ process is turned off. The specific value may be indicated to the user equipment by the base station through RRC signaling, or may be a default value. In this way, the semi-static on/off of the feedback mechanism of the HARQ process can be realized through RRC signaling.

As another example, the determining unit 102 may determine whether the feedback mechanism of the HARQ process is turned off based on the combination of the first specific field and other specific fields. For example, when determining that the value of the combination satisfies a predetermined condition, determine the feedback mechanism of the HARQ process is closed.

For example, the first specific field is PDSCH-to-HARQ_feedback timing indicator, and other specific fields may include one or more of the following: PUCCH resource indicator, TPC command for scheduled PUCCH.

In the case where the combination includes PDSCH-to-HARQ_feedback timing indicator, PUCCH resource indicator, and TPC command for scheduled PUCCH, for example, the predetermined condition may include one of the following: each field in the combination has a value of all 0; The value of each field is all 1s; some fields in the combination are all 0s, and the other fields are all 1s. Note that the predetermined condition described here is only an example, and the predetermined condition that can be applied is not limited to this.

By using a combination of fields to indicate whether the feedback mechanism of the HARQ process is turned off, reliability can be further improved.

Through this embodiment, the dynamic on/off and/or semi-static on/off of the feedback mechanism of the HARQ process can be realized without adding additional signaling overhead, which improves control flexibility and further improves system efficiency. In addition, since the solution of this embodiment supports HARQ blind transmission when the feedback mechanism of the HARQ process is turned off, system reliability is ensured.

FIG. 5 shows a block diagram of functional modules of an electronic device 200 according to another embodiment of the present application. As shown in FIG. 5, the electronic device 200 includes: a generating unit 201 configured to generate DCI, the DCI including at least a first specific field A feedback mechanism for indicating whether to turn off the HARQ process; and the providing unit 202 is configured to provide DCI to the user equipment, wherein, when the feedback mechanism of the HARQ process is turned off, the user equipment does not feed back the calibration of the data packet to the base station. The results of the test.

Wherein, the generating unit 201 and the providing unit 202 may be implemented by one or more processing circuits, and the processing circuit may be implemented as a chip, for example. In addition, it should be understood that each functional unit in the device shown in FIG. 5 is only a logical module divided according to the specific function implemented by it, and is not used to limit the specific implementation manner.

The electronic device 200 may, for example, be installed on the base station side or be communicably connected to the base station. Here, it should also be pointed out that the electronic device 200 may be implemented at the chip level, or may also be implemented at the device level. For example, the electronic device 200 may work as a base station itself, and may also include external devices such as a memory, a transceiver (not shown), and the like. The memory can be used to store programs and related data information that the base station needs to execute to implement various functions. The transceiver may include one or more communication interfaces to support communication with different devices (for example, user equipment, other base stations, etc.), and the implementation form of the transceiver is not specifically limited here.

For example, the generating unit 201 may instruct to close the feedback mechanism of the HARQ process by setting the value of the first specific field to a specific value. The specific value is, for example, all zeros or all ones, or any other predetermined value. The rule for turning off the feedback mechanism of the HARQ process when the first specific field takes a specific value can be written to the user equipment at the factory, so that the user equipment can determine that the feedback mechanism of the HARQ process is turned off when the user equipment receives the first specific field with a specific value ; Or, the rule can be notified to the user equipment via RRC signaling, a specific example will be described later.

Wherein, the generating unit 201 may be configured to determine the value of the first specific field according to at least one of the following, that is, determine whether to set the first specific field to a specific value: the round-trip delay between the base station and the user equipment (RTD) ), business requirements, data types. When the RTD between the base station and the user equipment is large (for example, greater than a predetermined threshold), for example, when the base station is a Geostationary Earth Orbit (GEO) satellite, the HARQ process feedback mechanism is turned off, that is, the first specific The field is set to a specific value; when the base station is a Low Earth Orbit (LEO) satellite, the feedback mechanism of the HARQ process is turned on, that is, the first specific field is not set to a specific value. For data with low reliability requirements, the feedback mechanism of the HARQ process can be turned off; for data with high reliability requirements, the feedback mechanism of the HARQ process can be turned on. In addition, for the control plane data, the feedback mechanism of the HARQ process can be enabled. For example, the feedback mechanism of the HARQ process is enabled for the initial access process, and the feedback mechanism of the HARQ process is disabled after the user equipment normally accesses the system. It should be noted that when the feedback mechanism of the HARQ process is closed, the HARQ blind transmission is still supported.

In the case where the first specific field is included in the DCI used for activation or release of semi-persistent scheduling, the dynamic on/off of the feedback mechanism for the HARQ process of the semi-persistent scheduling data can be realized.

As an example, the first specific field is PDSCH-to-HARQ_feedback timing indicator.

The generating unit 201 may also be configured to reserve a state in the parameter dl-DataToUL-ACK in the RRC signaling to indicate that the feedback mechanism of the HARQ process is turned off when the first specific field takes a specific value. That is, the rule of turning off the feedback mechanism of the HARQ process is notified to the user equipment through RRC signaling. As described in the first embodiment, dl-DataToUL-ACK is a list of the timing of sending ACK/NACK, which indicates the timing of sending ACK/NACK feedback when the PDSCH-to-HARQ_feedback timing indicator takes different values. In this embodiment, a state is reserved in dl-DataToUL-ACK, and when the PDSCH-to-HARQ_feedback timing indicator takes a specific value, it is mapped to the reservation state. According to the reservation state, the user equipment determines the HARQ process feedback The mechanism is closed. When the PDSCH-to-HARQ_feedback timing indicator does not take a specific value, it is mapped to other states of dl-DataToUL-ACK. According to these states, the user equipment determines the timing to send ACK/NACK feedback. For specific examples, see Figure 3 and Related description in an embodiment.

When the first specific field is the PDSCH-to-HARQ_feedback timing indicator, when calculating the time slot used for feedback, the reference value is added to the number of time slots to which the first specific field is mapped. For specific examples, refer to FIG. 4 and related descriptions in the first embodiment, which will not be repeated here. The reference value can be calculated based on the minimum distance of the satellite beam to the ground, as shown in the previous formula (1).

Exemplarily, the generating unit 201 may also omit the first specific field or set the first specific field as a default value, and set the value of the reserved state of dl-DataToUL-ACK to 0 or less than the specific value To instruct to close the feedback mechanism of the HARQ process. In this case, the feedback mechanism of the HARQ process can be turned off/on semi-statically through RRC signaling.

In another example, the DCI includes a combination of the first specific field and other specific fields to indicate whether to turn off the feedback mechanism of the HARQ process. For example, the first specific field is PDSCH-to-HARQ_feedback timing indicator, and other specific fields include one or more of the following: PUCCH resource indicator, TPC command for scheduled PUCCH.

In the case where the combination includes PDSCH-to-HARQ_feedback timing indicator, PUCCH resource indicator, and TPC command for scheduled PUCCH, for example, the generating unit 201 may set the value of the combination to one of the following to indicate the closing of the HARQ process feedback mechanism: combination The value of each field in the combination is all 0; the value of each field in the combination is all 1; some fields in the combination are all 0, and the other fields are all 1s. Note that the value settings described here are only examples, and not restrictive.

By using a combination of fields to indicate whether to turn off the feedback mechanism of the HARQ process, reliability can be further improved.

For ease of understanding, FIG. 6 shows a schematic diagram of an example of the information flow between the base station and the user equipment in the case where the feedback mechanism of the HARQ process for dynamically scheduling data is dynamically turned on/off. As shown in FIG. 6, after the user equipment (UE) initially accesses the base station (BS), the base station can turn off/on HARQ at the packet level through the PDSCH-to-HARQ_feedback timing indicator field in the DCI. In the example of FIG. 6, the BS is transmitting the PDCCH scrambled by C-RNTI and the corresponding PDSCH#1 (here "corresponding PDSCH#1" refers to the PDSCH scheduled by the PDCCH through DCI, and the following corresponding PDSCH is the same) At this time, set the PDSCH-to-HARQ_feedback timing indicator in the DCI to all 0s. The UE decodes PDCCH and PDSCH#1, and based on the fact that the PDSCH-to-HARQ_feedback timing indicator is all 0s, it is determined that no feedback of the verification result is required. Among them, whether the UE needs to perform CRC depends on the specific UE implementation. Not restrictive. Then, when the BS transmits the PDCCH scrambled by the C-RNTI and the corresponding PDSCH#2, it sets the PDSCH-to-HARQ_feedback timing indicator in the DCI to not all 0s. Similarly, the UE decodes PDCCH and PDSCH#2, and determines that feedback of the verification result is required based on the fact that the PDSCH-to-HARQ_feedback timing indicator is not all 0s. For example, the UE feeds back NACK to the BS based on the CRC result. After receiving the NACK, the BS sends PDSCH#2 again, and the UE performs decoding again and performs CRC. If the CRC result is correct, the UE feeds back ACK to the BS. Subsequently, the transmission of other data packets is performed.

In addition, FIG. 7 shows a schematic diagram of an example of the information flow between the base station and the user equipment in the case of dynamic on/off of the feedback mechanism of the HARQ process for semi-persistent scheduling (SPS) data. As shown in Figure 7, after the UE initially accesses the BS, the BS sets the PDSCH-to-HARQ_feedback timing indicator in the DCI when sending the DCI for SPS activation and the corresponding PDSCH#1 scrambled by the CS-RNTI For all 0s. The UE decodes PDCCH and PDSCH#1, and based on the fact that the PDSCH-to-HARQ_feedback timing indicator is all 0s, it is determined that no feedback of the verification result is required. Among them, whether the UE needs to perform CRC depends on the specific UE implementation. Not restrictive. Next, the BS continues to send SPS data PDSCH#2 and PDSCH#3. Since the PDSCH-to-HARQ_feedback timing indicator in the DCI where SPS is activated is all 0s, the state of the feedback mechanism of the previous HARQ process is continued, and the UE responds to PDSCH#2. And PDSCH#3 also does not perform ACK/NACK feedback. Subsequently, the BS sends the DCI scrambled by the CS-RNTI for SPS release and sets the PDSCH-to-HARQ_feedback timing indicator to non-all 0s, and the UE releases feedback for the SPS according to the indication of the PDSCH-to-HARQ_feedback timing indicator. ACK. Next, when the BS transmits the DCI for SPS activation scrambled by the CS-RNTI and the corresponding PDSCH#4, it sets the PDSCH-to-HARQ_feedback timing indicator in the DCI to not all 0s. The UE decodes PDCCH and PDSCH#4, and feedbacks the verification result based on the fact that the PDSCH-to-HARQ_feedback timing indicator is not all 0s. The BS then sends PDSCH#5. Since the PDSCH-to-HARQ_feedback timing indicator in the DCI where SPS is activated is not all 0s, the state of the feedback mechanism of the previous HARQ process is continued, and the UE performs the verification result for PDSCH#5 (Figure 7 In the example, ACK) feedback.

It should be noted that the information flow in Figures 6 and 7 is only schematic and does not limit the application.

In the process of describing the electronic device for wireless communication in the above embodiments, some processing or methods are obviously disclosed. Hereinafter, an outline of these methods is given without repeating some of the details that have been discussed above, but it should be noted that although these methods are disclosed in the process of describing electronic devices for wireless communication, these methods do not necessarily adopt Those components described may not necessarily be executed by those components. For example, the implementation of an electronic device for wireless communication may be partially or completely implemented using hardware and/or firmware, while the method for wireless communication discussed below may be fully implemented by a computer executable program, although these The method may also employ hardware and/or firmware of an electronic device for wireless communication.

FIG. 8 shows a flowchart of a method for wireless communication according to an embodiment of the present application. The method includes: obtaining DCI from a base station (S11); and determining a feedback mechanism of the HARQ process based at least on the first specific field of the DCI Whether to be closed (S12), wherein, in the case where it is determined that the feedback mechanism of the HARQ process is closed, the verification result for the data packet is not fed back to the base station.

In step S12, for example, when it is determined that the first specific field has a specific value, it is determined that the feedback mechanism of the HARQ process is turned off. An example of the specific value is, for example, all 0s or all 1s, but it is not limited thereto. In step S12, the meaning of the first specific field may be interpreted based on RRC signaling to perform the above determination. Alternatively, the meaning of the first specific field can also be explained based on factory settings.

For example, in step S12, the meaning of the first specific field can be determined based on the parameter dl-DataToUL-ACK in the RRC signaling, where dl-DataToUL-ACK reserves a state to indicate when the first specific field takes a specific When the value is set, the feedback mechanism of the HARQ process is closed. In addition, the reserved state of dl-DataToUL-ACK is also used to indicate the reference value of the first specific field when the feedback mechanism of the HARQ process is turned on.

When the first specific field does not exist or is default, it can also be determined whether the feedback mechanism of the HARQ process is closed based on the value of the reserved state of dl-DataToUL-ACK. When the value of the reserved state is 0 or less than the specific value, it is determined that the feedback mechanism of the HARQ process is closed.

In step S12, it is also possible to determine whether the feedback mechanism of the HARQ process is turned off based on the combination of the first specific field and other specific fields, and when it is determined that the value of the combination satisfies a predetermined condition, it is determined that the feedback mechanism of the HARQ process is turned off. shut down.

For example, the first specific field is PDSCH-to-HARQ_feedback timing indicator, and other specific fields include one or more of the following: PUCCH resource indicator, TPC command for scheduled PUCCH. When the combination includes PDSCH-to-HARQ_feedback timing indicator, PUCCH resource indicator, and TPC command for scheduled PUCCH, the predetermined condition may include one of the following: each field in the combination has a value of all 0s, and each of the combinations The field values are all 1s, some fields in the combination are all 0s, and the other fields are all 1s.

FIG. 9 shows a flowchart of a method for wireless communication according to another embodiment of the present application. The method includes: generating DCI, where the DCI includes at least a first specific field for indicating whether to close a feedback mechanism of the HARQ process (S21 ); and provide the DCI to the user equipment (S22), wherein, in the case that the feedback mechanism of the HARQ process is turned off, the user equipment does not feed back the verification result for the data packet to the base station.

In step S21, the value of the first specific field may be determined according to at least one of the following: the round-trip delay between the base station and the user equipment, service requirements, and data type.

For example, in step S21, the feedback mechanism of the HARQ process can be instructed to be closed by setting the value of the first specific field to a specific value. In addition, a state may be reserved in the parameter dl-DataToUL-ACK in the RRC signaling to indicate that the feedback mechanism of the HARQ process is turned off when the first specific field takes a specific value. The reserved state of dl-DataToUL-ACK may also be used to indicate the reference value of the first specific field when the feedback mechanism of the HARQ process is turned on.

It is also possible to omit the first specific field or set the first specific field to the default value, and set the value of the reserved state of dl-DataToUL-ACK to 0 or less than the specific value to indicate the feedback of closing the HARQ process mechanism.

In addition, the DCI may include a combination of the first specific field and other specific fields to indicate whether to turn off the feedback mechanism of the HARQ process.

As an example, the first specific field may be PDSCH-to-HARQ_feedback timing indicator. Other specific fields may include one or more of the following: PUCCH resource indicator, TPC command for scheduled PUCCH.

In step S21, the values of PDSCH-to-HARQ_feedback timing indicator, PUCCH resource indicator, and TPC command for scheduled PUCCH can be set as one of the following to indicate that the feedback mechanism of the HARQ process is closed: all 0s, all 1s , One part is all 0s and the other part is all 1s.

The above methods respectively correspond to the device 100 described in the first embodiment and the device 200 described in the second embodiment. For specific details, please refer to the description of the corresponding positions above, which will not be repeated here. Note that each of the above methods can be used in combination or alone.

The technology of the present disclosure can be applied to various products.

For example, the electronic device 200 may be implemented as various base stations. The base station can be implemented as any type of evolved Node B (eNB) or gNB (5G base station). eNBs include, for example, macro eNBs and small eNBs. A small eNB may be an eNB that covers a cell smaller than a macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB. A similar situation can also be used for gNB. Instead, the base station may be implemented as any other type of base station, such as NodeB and base transceiver station (BTS). The base station may include: a main body (also referred to as a base station device) configured to control wireless communication; and one or more remote radio heads (RRH) arranged in a different place from the main body. In addition, various types of user equipment can operate as a base station by temporarily or semi-persistently performing base station functions.

The electronic device 100 may be implemented as various user devices. The user equipment may be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/dongle type mobile router, and a digital camera) or a vehicle-mounted terminal (such as a car navigation device). The user equipment may also be implemented as a terminal (also referred to as a machine type communication (MTC) terminal) that performs machine-to-machine (M2M) communication. In addition, the user equipment may be a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the aforementioned terminals.

[Application example of base station]

(First application example)

FIG. 10 is a block diagram showing a first example of a schematic configuration of an eNB or gNB to which the technology of the present disclosure can be applied. Note that the following description uses eNB as an example, but it can also be applied to gNB. The eNB 800 includes one or more antennas 810 and a base station device 820. The base station device 820 and each antenna 810 may be connected to each other via an RF cable.

Each of the antennas 810 includes a single or multiple antenna elements (such as multiple antenna elements included in a multiple input multiple output (MIMO) antenna), and is used for the base station device 820 to transmit and receive wireless signals. As shown in FIG. 10, the eNB 800 may include multiple antennas 810. For example, multiple antennas 810 may be compatible with multiple frequency bands used by eNB 800. Although FIG. 10 shows an example in which the eNB 800 includes multiple antennas 810, the eNB 800 may also include a single antenna 810.

The base station device 820 includes a controller 821, a memory 822, a network interface 823, and a wireless communication interface 825.

The controller 821 may be, for example, a CPU or a DSP, and operates various functions of a higher layer of the base station device 820. For example, the controller 821 generates a data packet based on the data in the signal processed by the wireless communication interface 825, and transmits the generated packet via the network interface 823. The controller 821 may bundle data from a plurality of baseband processors to generate a bundled packet, and deliver the generated bundled packet. The controller 821 may have a logical function to perform control such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. This control can be performed in conjunction with nearby eNBs or core network nodes. The memory 822 includes RAM and ROM, and stores programs executed by the controller 821 and various types of control data (such as a terminal list, transmission power data, and scheduling data).

The network interface 823 is a communication interface for connecting the base station device 820 to the core network 824. The controller 821 may communicate with the core network node or another eNB via the network interface 823. In this case, the eNB 800 and the core network node or other eNBs may be connected to each other through a logical interface (such as an S1 interface and an X2 interface). The network interface 823 may also be a wired communication interface or a wireless communication interface for a wireless backhaul line. If the network interface 823 is a wireless communication interface, the network interface 823 may use a higher frequency band for wireless communication than the frequency band used by the wireless communication interface 825.

The wireless communication interface 825 supports any cellular communication scheme, such as Long Term Evolution (LTE) and LTE-Advanced, and provides wireless connection to terminals located in the cell of the eNB 800 via the antenna 810. The wireless communication interface 825 may generally include, for example, a baseband (BB) processor 826 and an RF circuit 827. The BB processor 826 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform layers (such as L1, medium access control (MAC), radio link control (RLC), and packet data convergence protocol ( PDCP)) various types of signal processing. Instead of the controller 821, the BB processor 826 may have a part or all of the above-mentioned logical functions. The BB processor 826 may be a memory storing a communication control program, or a module including a processor and related circuits configured to execute the program. The update program can change the function of the BB processor 826. The module may be a card or a blade inserted into the slot of the base station device 820. Alternatively, the module can also be a chip mounted on a card or blade. Meanwhile, the RF circuit 827 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 810.

As shown in FIG. 10, the wireless communication interface 825 may include a plurality of BB processors 826. For example, multiple BB processors 826 may be compatible with multiple frequency bands used by eNB 800. As shown in FIG. 10, the wireless communication interface 825 may include a plurality of RF circuits 827. For example, multiple RF circuits 827 may be compatible with multiple antenna elements. Although FIG. 10 shows an example in which the wireless communication interface 825 includes a plurality of BB processors 826 and a plurality of RF circuits 827, the wireless communication interface 825 may also include a single BB processor 826 or a single RF circuit 827.

In the eNB 800 shown in FIG. 10, the transceiver of the electronic device 200 may be implemented by a wireless communication interface 825. At least part of the functions may also be implemented by the controller 821. For example, the controller 821 may implement the dynamic on/off of the feedback mechanism of the HARQ process by executing the functions of the generating unit 201 and the providing unit 202.

(Second application example)

FIG. 11 is a block diagram showing a second example of a schematic configuration of an eNB or gNB to which the technology of the present disclosure can be applied. Note that similarly, the following description takes eNB as an example, but it can also be applied to gNB. The eNB 830 includes one or more antennas 840, a base station device 850, and an RRH 860. The RRH 860 and each antenna 840 may be connected to each other via an RF cable. The base station device 850 and the RRH 860 may be connected to each other via a high-speed line such as an optical fiber cable.

Each of the antennas 840 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the RRH 860 to transmit and receive wireless signals. As shown in FIG. 11, the eNB 830 may include multiple antennas 840. For example, multiple antennas 840 may be compatible with multiple frequency bands used by eNB 830. Although FIG. 11 shows an example in which the eNB 830 includes multiple antennas 840, the eNB 830 may also include a single antenna 840.

The base station equipment 850 includes a controller 851, a memory 852, a network interface 853, a wireless communication interface 855, and a connection interface 857. The controller 851, the memory 852, and the network interface 853 are the same as the controller 821, the memory 822, and the network interface 823 described with reference to FIG. 10.

The wireless communication interface 855 supports any cellular communication scheme (such as LTE and LTE-Advanced), and provides wireless communication to a terminal located in a sector corresponding to the RRH 860 via the RRH 860 and the antenna 840. The wireless communication interface 855 may generally include, for example, a BB processor 856. The BB processor 856 is the same as the BB processor 826 described with reference to FIG. 10 except that the BB processor 856 is connected to the RF circuit 864 of the RRH 860 via the connection interface 857. As shown in FIG. 11, the wireless communication interface 855 may include a plurality of BB processors 856. For example, multiple BB processors 856 may be compatible with multiple frequency bands used by eNB 830. Although FIG. 11 shows an example in which the wireless communication interface 855 includes a plurality of BB processors 856, the wireless communication interface 855 may also include a single BB processor 856.

The connection interface 857 is an interface for connecting the base station equipment 850 (wireless communication interface 855) to the RRH 860. The connection interface 857 may also be a communication module used to connect the base station device 850 (wireless communication interface 855) to the communication in the above-mentioned high-speed line of the RRH 860.

The RRH 860 includes a connection interface 861 and a wireless communication interface 863.

The connection interface 861 is an interface for connecting the RRH 860 (wireless communication interface 863) to the base station device 850. The connection interface 861 may also be a communication module used for communication in the aforementioned high-speed line.

The wireless communication interface 863 transmits and receives wireless signals via the antenna 840. The wireless communication interface 863 may generally include, for example, an RF circuit 864. The RF circuit 864 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 840. As shown in FIG. 11, the wireless communication interface 863 may include a plurality of RF circuits 864. For example, multiple RF circuits 864 can support multiple antenna elements. Although FIG. 11 shows an example in which the wireless communication interface 863 includes a plurality of RF circuits 864, the wireless communication interface 863 may also include a single RF circuit 864.

In the eNB 830 shown in FIG. 11, the transceiver of the electronic device 200 may be implemented by the wireless communication interface 855 and/or the wireless communication interface 825. At least part of the functions may also be implemented by the controller 851. For example, the controller 851 may implement the dynamic on/off of the feedback mechanism of the HARQ process by executing the functions of the generating unit 201 and the providing unit 202.

[Application example of user equipment]

(First application example)

FIG. 12 is a block diagram showing an example of a schematic configuration of a smart phone 900 to which the technology of the present disclosure can be applied. The smartphone 900 includes a processor 901, a memory 902, a storage device 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 912, one or more Antenna switch 915, one or more antennas 916, bus 917, battery 918, and auxiliary controller 919.

The processor 901 may be, for example, a CPU or a system on a chip (SoC), and controls the functions of the application layer and other layers of the smartphone 900. The memory 902 includes RAM and ROM, and stores data and programs executed by the processor 901. The storage device 903 may include a storage medium such as a semiconductor memory and a hard disk. The external connection interface 904 is an interface for connecting an external device such as a memory card and a universal serial bus (USB) device to the smartphone 900.

The imaging device 906 includes an image sensor such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS), and generates a captured image. The sensor 907 may include a group of sensors, such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 908 converts the sound input to the smartphone 900 into an audio signal. The input device 909 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 910, and receives an operation or information input from the user. The display device 910 includes a screen such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display, and displays an output image of the smartphone 900. The speaker 911 converts the audio signal output from the smartphone 900 into sound.

The wireless communication interface 912 supports any cellular communication scheme such as LTE and LTE-Advanced, and performs wireless communication. The wireless communication interface 912 may generally include, for example, a BB processor 913 and an RF circuit 914. The BB processor 913 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 914 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 916. Note that although the figure shows a situation where one RF link is connected to one antenna, this is only illustrative, and also includes a situation where one RF link is connected to multiple antennas through multiple phase shifters. The wireless communication interface 912 may be a chip module on which the BB processor 913 and the RF circuit 914 are integrated. As shown in FIG. 12, the wireless communication interface 912 may include a plurality of BB processors 913 and a plurality of RF circuits 914. Although FIG. 12 shows an example in which the wireless communication interface 912 includes a plurality of BB processors 913 and a plurality of RF circuits 914, the wireless communication interface 912 may also include a single BB processor 913 or a single RF circuit 914.

In addition, in addition to the cellular communication scheme, the wireless communication interface 912 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless local area network (LAN) scheme. In this case, the wireless communication interface 912 may include a BB processor 913 and an RF circuit 914 for each wireless communication scheme.

Each of the antenna switches 915 switches the connection destination of the antenna 916 among a plurality of circuits included in the wireless communication interface 912 (for example, circuits for different wireless communication schemes).

Each of the antennas 916 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 912 to transmit and receive wireless signals. As shown in FIG. 12, the smart phone 900 may include multiple antennas 916. Although FIG. 12 shows an example in which the smart phone 900 includes a plurality of antennas 916, the smart phone 900 may also include a single antenna 916.

In addition, the smart phone 900 may include an antenna 916 for each wireless communication scheme. In this case, the antenna switch 915 may be omitted from the configuration of the smartphone 900.

The bus 917 connects the processor 901, memory 902, storage device 903, external connection interface 904, camera 906, sensor 907, microphone 908, input device 909, display device 910, speaker 911, wireless communication interface 912, and auxiliary controller 919 to each other. connection. The battery 918 supplies power to each block of the smartphone 900 shown in FIG. 12 via a feeder line, which is partially shown as a dashed line in the figure. The auxiliary controller 919 operates the minimum necessary functions of the smartphone 900 in the sleep mode, for example.

In the smart phone 900 shown in FIG. 12, the transceiver of the electronic device 100 may be implemented by the wireless communication interface 912. At least part of the functions may also be implemented by the processor 901 or the auxiliary controller 919. For example, the processor 901 or the auxiliary controller 919 may implement the dynamic on/off of the feedback mechanism of the HARQ process by executing the functions of the acquiring unit 101 and the determining unit 102.

(Second application example)

FIG. 13 is a block diagram showing an example of a schematic configuration of a car navigation device 920 to which the technology of the present disclosure can be applied. The car navigation device 920 includes a processor 921, a memory 922, a global positioning system (GPS) module 924, a sensor 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, wireless The communication interface 933, one or more antenna switches 936, one or more antennas 937, and a battery 938.

The processor 921 may be, for example, a CPU or SoC, and controls the navigation function of the car navigation device 920 and other functions. The memory 922 includes RAM and ROM, and stores data and programs executed by the processor 921.

The GPS module 924 uses GPS signals received from GPS satellites to measure the position of the car navigation device 920 (such as latitude, longitude, and altitude). The sensor 925 may include a group of sensors, such as a gyro sensor, a geomagnetic sensor, and an air pressure sensor. The data interface 926 is connected to, for example, an in-vehicle network 941 via a terminal not shown, and acquires data (such as vehicle speed data) generated by the vehicle.

The content player 927 reproduces content stored in a storage medium such as CD and DVD, which is inserted into the storage medium interface 928. The input device 929 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 930, and receives an operation or information input from the user. The display device 930 includes a screen such as an LCD or an OLED display, and displays images of navigation functions or reproduced content. The speaker 931 outputs the sound of the navigation function or the reproduced content.

The wireless communication interface 933 supports any cellular communication scheme, such as LTE and LTE-Advanced, and performs wireless communication. The wireless communication interface 933 may generally include, for example, a BB processor 934 and an RF circuit 935. The BB processor 934 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 935 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 937. The wireless communication interface 933 may also be a chip module on which the BB processor 934 and the RF circuit 935 are integrated. As shown in FIG. 13, the wireless communication interface 933 may include a plurality of BB processors 934 and a plurality of RF circuits 935. Although FIG. 13 shows an example in which the wireless communication interface 933 includes a plurality of BB processors 934 and a plurality of RF circuits 935, the wireless communication interface 933 may also include a single BB processor 934 or a single RF circuit 935.

Also, in addition to the cellular communication scheme, the wireless communication interface 933 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless LAN scheme. In this case, the wireless communication interface 933 may include a BB processor 934 and an RF circuit 935 for each wireless communication scheme.

Each of the antenna switches 936 switches the connection destination of the antenna 937 among a plurality of circuits included in the wireless communication interface 933, such as circuits for different wireless communication schemes.

Each of the antennas 937 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 933 to transmit and receive wireless signals. As shown in FIG. 13, the car navigation device 920 may include multiple antennas 937. Although FIG. 13 shows an example in which the car navigation device 920 includes a plurality of antennas 937, the car navigation device 920 may also include a single antenna 937.

In addition, the car navigation device 920 may include an antenna 937 for each wireless communication scheme. In this case, the antenna switch 936 may be omitted from the configuration of the car navigation device 920.

The battery 938 supplies power to each block of the car navigation device 920 shown in FIG. 13 via a feeder line, and the feeder line is partially shown as a dashed line in the figure. The battery 938 accumulates power supplied from the vehicle.

In the car navigation device 920 shown in FIG. 13, the transceiver or the sending unit of the electronic device 100 may be implemented by the wireless communication interface 933. At least part of the functions may also be implemented by the processor 921. For example, the processor 921 may implement the dynamic on/off of the feedback mechanism of the HARQ process by executing the functions of the acquiring unit 101 and the determining unit 102.

The technology of the present disclosure may also be implemented as an in-vehicle system (or vehicle) 940 including one or more blocks in the car navigation device 920, the in-vehicle network 941, and the vehicle module 942. The vehicle module 942 generates vehicle data (such as vehicle speed, engine speed, and failure information), and outputs the generated data to the vehicle network 941.

The above describes the basic principles of the present invention in combination with specific embodiments. However, it should be pointed out that for those skilled in the art, all or any steps or components of the method and device of the present invention can be understood to be in any computing device ( In a network including processors, storage media, etc.) or computing devices, implemented in the form of hardware, firmware, software, or a combination thereof, this is the basic circuit design used by those skilled in the art after reading the description of the present invention Knowledge or basic programming skills can be achieved.

Moreover, the present invention also proposes a program product storing machine-readable instruction codes. When the instruction code is read and executed by a machine, the above method according to the embodiment of the present invention can be executed.

Correspondingly, a storage medium for carrying the above-mentioned program product storing machine-readable instruction codes is also included in the disclosure of the present invention. The storage medium includes, but is not limited to, a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and so on.

When the present invention is implemented by software or firmware, a computer with a dedicated hardware structure (such as a general-purpose computer 1400 shown in FIG. 14) is installed from a storage medium or a network to the program constituting the software, and the computer is installed with various programs. When, can perform various functions and so on.

In FIG. 14, a central processing unit (CPU) 1401 performs various processes in accordance with a program stored in a read only memory (ROM) 1402 or a program loaded from a storage portion 1408 to a random access memory (RAM) 1403. The RAM 1403 also stores data required when the CPU 1401 executes various processes and the like as necessary. The CPU 1401, the ROM 1402, and the RAM 1403 are connected to each other via a bus 1404. The input/output interface 1405 is also connected to the bus 1404.

The following components are connected to the input/output interface 1405: input part 1406 (including keyboard, mouse, etc.), output part 1407 (including display, such as cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.), Storage part 1408 (including hard disk, etc.), communication part 1409 (including network interface card such as LAN card, modem, etc.). The communication section 1409 performs communication processing via a network such as the Internet. The driver 1410 can also be connected to the input/output interface 1405 according to needs. Removable media 1411 such as magnetic disks, optical disks, magneto-optical disks, semiconductor memory, etc. are installed on the drive 1410 as needed, so that the computer programs read out therefrom are installed into the storage portion 1408 as needed.

In the case of implementing the above-mentioned series of processing by software, a program constituting the software is installed from a network such as the Internet or a storage medium such as a removable medium 1411.

Those skilled in the art should understand that this storage medium is not limited to the removable medium 1411 shown in FIG. 14 that stores the program and is distributed separately from the device to provide the program to the user. Examples of removable media 1411 include magnetic disks (including floppy disks (registered trademarks)), optical disks (including compact disk read-only memory (CD-ROM) and digital versatile disks (DVD)), magneto-optical disks (including mini disks (MD) (registered Trademark)) and semiconductor memory. Alternatively, the storage medium may be a ROM 1402, a hard disk contained in the storage portion 1408, etc., in which programs are stored and distributed to users along with the device containing them.

It should also be pointed out that in the device, method and system of the present invention, each component or each step can be decomposed and/or recombined. These decomposition and/or recombination should be regarded as equivalent solutions of the present invention. In addition, the steps of executing the above-mentioned series of processing can naturally be executed in chronological order in the order of description, but do not necessarily need to be executed in chronological order. Some steps can be performed in parallel or independently of each other.

Finally, it should be noted that the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or equipment. In addition, if there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other same elements in the process, method, article, or equipment including the element.

Although the embodiments of the present invention are described in detail above with reference to the accompanying drawings, it should be understood that the above-described embodiments are only used to illustrate the present invention, and do not constitute a limitation to the present invention. For those skilled in the art, various modifications and changes can be made to the above-mentioned embodiments without departing from the essence and scope of the present invention. Therefore, the scope of the present invention is limited only by the appended claims and their equivalent meanings.

Claims

An electronic device used for wireless communication, including:

The processing circuit is configured as:

Obtain downlink control information from the base station; and

Determine whether the feedback mechanism of the hybrid automatic repeat request process is turned off based at least on the combination of the first specific field of the downlink control information and other specific fields, wherein the feedback mechanism of the hybrid automatic repeat request process is determined to be turned off In the case of not feeding back the verification result for the data packet to the base station.
The electronic device according to claim 1, wherein the processing circuit is configured to: when it is determined that the value of the combination satisfies a predetermined condition, determine that the feedback mechanism of the hybrid automatic repeat request process is turned off.
The electronic device according to claim 1, wherein the processing circuit is configured to determine the process of the hybrid automatic repeat request process when the values of the first specific field and the other specific fields are all 0 The feedback mechanism is closed.
The electronic device according to claim 1, wherein the processing circuit is further configured to determine the meaning of the first specific field based on a parameter in radio resource control signaling, wherein the parameter reserves a state The feedback mechanism used to indicate that the hybrid automatic repeat request process is closed when the combination takes a specific value.
The electronic device according to claim 4, wherein the reserved state of the parameter is also used to indicate the reference value of the first specific field when the feedback mechanism of the hybrid automatic repeat request process is turned on.
The electronic device according to claim 4, wherein the processing circuit is further configured to determine based on the value of the reserved state of the parameter when it is determined that the first specific field does not exist or is default Whether the feedback mechanism of the hybrid automatic retransmission request process is closed.
7. The electronic device according to claim 6, wherein, when the value of the reserved state is 0 or less than a specific value, the processing circuit determines that the feedback mechanism of the hybrid automatic repeat request process is turned off.
The electronic device according to claim 1, wherein the first specific field indicates HARQ feedback time.
The electronic device according to claim 8, wherein the first specific field includes HARQ_feedback timing indicator.
The electronic device according to claim 1, wherein the other specific field indicates PUCCH resources.
The electronic device according to claim 10, wherein the other specific field includes a PUCCH resource indicator.
The electronic device according to claim 1, wherein the processing circuit is further configured to interpret the meaning of the first specific field based on radio resource control signaling to perform the determination.
An electronic device used for wireless communication, including:

The processing circuit is configured as:

Generating downlink control information, where the downlink control information includes a combination of at least a first specific field and other specific fields to indicate whether to close the feedback mechanism of the hybrid automatic repeat request process; and

Providing the downlink control information to the user equipment,

Wherein, when the feedback mechanism of the hybrid automatic repeat request process is closed, the user equipment does not feed back the verification result for the data packet to the base station.
The electronic device according to claim 13, wherein the processing circuit is configured to determine the value of the first specific field according to at least one of the following: a round-trip delay between the base station and the user equipment , Business requirements, data types.
The electronic device according to claim 13, wherein the processing circuit is configured to reserve a state in a parameter in radio resource control signaling for indicating that the hybrid automatic reset is turned off when the combination takes a specific value. The feedback mechanism of the request process.
The electronic device according to claim 15, wherein the reserved state of the parameter is also used to indicate the reference value of the first specific field when the feedback mechanism of the hybrid automatic repeat request process is turned on.
The electronic device according to claim 15, wherein the processing circuit is further configured to omit the first specific field or set the first specific field as a default value, and set the reserved value of the parameter The value of the status of is set to 0 or less than a specific value to indicate to close the feedback mechanism of the hybrid automatic repeat request process.
The electronic device according to claim 13, wherein the first specific field indicates HARQ feedback time.
The electronic device according to claim 17, wherein the first specific field includes HARQ_feedback timing indicator. 20. The electronic device of claim 13, wherein the other specific field indicates PUCCH resources.
The electronic device according to claim 20, wherein the other specific field includes a PUCCH resource indicator.
A method for wireless communication, including:

Obtain downlink control information from the base station; and

Determine whether the feedback mechanism of the hybrid automatic repeat request process is turned off based at least on the combination of the first specific field of the downlink control information and other specific fields, wherein the feedback mechanism of the hybrid automatic repeat request process is determined to be turned off In the case of not feeding back the verification result for the data packet to the base station.
A method for wireless communication, including:

Generating downlink control information, where the downlink control information includes a combination of at least a first specific field and other specific fields to indicate whether to close the feedback mechanism of the hybrid automatic repeat request process; and

Providing the downlink control information to the user equipment,

Wherein, when the feedback mechanism of the hybrid automatic repeat request process is closed, the user equipment does not feed back the verification result for the data packet to the base station.
A computer-readable storage medium having computer-executable instructions stored thereon, and when the computer-executable instructions are executed, the method for wireless communication according to claim 22 or 23 is executed.